Siemens CGY181 Datasheet

GaAs MMIC CGY 181

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Preliminary Datasheet

*Power amplifier for PCN/PCS applications
*Fully integrated 2 stage amplifier
*Operating voltage range: 2.7 to 6 V
*Overall power added efficiency 35 %
*Input matched to 50 Ω, simple output match

ESD: Electrostatic discharge sensitive device,

observe handling precautions!

Type Marking Ordering code

(8-mm taped)

Package 1)

CGY 181 CGY 181 Q68000-A8883 MW 12

Maximum ratings

Characteristics Symbol max. Value Unit

Positive supply voltage V
Negative supply voltage 2)V
Supply current
Channel temperature
Storage temperature
RF input power

D
G

I

D

T

Ch

T

stg

P

in

9V

-8 V
2A

150 °C

-55...+150 °C
25 dBm

Total power dissipation

Ts: Temperature at soldering point

(Ts ≤ 81 °C)

P

tot

5W

Thermal Resistance

Channel-soldering point

1)

Plastic body identical to SOT 223, dimensions see chapter Package Outlines

2) V

= -8V only in combination with V

G

Siemens Aktiengesellschaft pg. 1/14 01.02.96

= 0V; VG = -6V while V

TR

R

thChS

TR

≠ 0V

≤14

K/W

HL EH PD 21

GaAs MMIC CGY 181

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Functional block diagramm:

VD1 (7) VD2 (11)VG (1)

VTR (2)

Pin (8)

connected (shut off mode).

Pin # Configuration

1
2

3,4,5,10

6,9

Control

Circuit

VG

VTR
GND 2
GND 1

GND1 (6,9) GND2

Negative voltage at control circuit (-4V...-8V)
Control voltage for transmit mode (0V) or receive mode (open)
RF and DC ground of the 2nd stage
RF and DC ground of the 1st stage

(3, 4, 5, 10)

Pout (11)

Short description of CGY181
operation:

A negative voltage between -4V to -6V
(stabilization not necessary) has to be
connected to the VG-pin, a positive
supply voltage has to be applied to the
VD-pins.
The VTR-pin has to switched to 0V
(GND) during transmit operation. The
MMIC CGY181 is self-biased, the
operating current is adjusted by the
internal control circuit.
In receive mode the VTR-pin is not

7

8
11
12

VD1

RFin

VD2,RFout

-

Positive drain voltage of the 1st stage
RF input power
Positive drain voltage of the 2nd stage, RF output power
not connected

DC characteristics

Characteristics Symbol Conditions min typ max Unit

Drain current stage 1
stage 2
Drain current with

active current control
Transconductance
(stage 1 and 2)
Pinch off voltage

IDSS1
IDSS2
ID

gfs1
gfs2
Vp

VD=3V, VG=0V, VTR n.c. 0.6 0.9 1.2 A

2.4 3.5 4.8 A

VD=3V, VG=-4V, VTR=0V 1.0 A

VD=3V, ID=350mA 0.28 0.32 - S
VD=3V, ID=700mA 1.1 1.3 - S
VD=3V, ID<500µA

-3.8 -2.8 -1.8 V

(all stages)

Siemens Aktiengesellschaft pg. 2/14 01.02.96

HL EH PD 21

GaAs MMIC CGY 181

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Electrical characteristics

(TA = 25°C , f=1.75 GHz, ZS=ZL=50 Ohm, VD=3.6V, VG =-4V, VTR pin connected to
ground, unless otherwise specified)

Characteristics Symbol min typ max Unit

Supply current

Pin= 0 dBm

Negative supply current

I

DD

I

G

- 1.2 - A

-23mA

(normal operation)

Shut-off current

VTR n.c

.

Negative supply current

I

D

I

G

- 400 - µA

-10-

(shut off mode, VTR pin n.c.)

Small signal gain

G

- 20.5 - dB

Pin = -5dBm

Power Gain

VD=3.6V, Pin = 16 dBm

Power Gain

VD=5V, Pin = 16 dBm

Output Power

VD=3.6V, Pin = 16 dBm

Output Power

VD=5V , Pin = 16 dBm

Overall Power Added Efficiency

VD=3.6V, Pin = 16 dBm

Overall Power Added Efficiency

VD=5V, Pin = 16 dBm

Harmonics (P
VD=3.6V

(Pout
Harmonics (P
VD=5V

(Pout

=16dBm) 2f

=31.85dBm) 3f

=16dBm) 2f

=31.85dBm) 3f

0

0

P

P

G

G

η

η

14.5 15.5 - dB

17.5 18.5 - dB

0

0

30.5 31.5 - dBm

33.5 34.5 - dBm

-37-%

-35-%

-

-

-44.8

-70

-45.1

-75
Input VSWR VD=3.6V 1.9:1
Third order intercept point

f1=1.7500GHz; f2=1.7502GHz; VD = 3.6V

Third order intercept point

f1=1.7500GHz; f2=1.7502GHz; VD = 5V

IP

IP

3

3

41 dBm

44 dBm

µA

-

dBc

­dBc

All RF-measurements were done in a pulsed mode with a duty cycle of 10% (ton=0.33ms)!

Siemens Aktiengesellschaft pg. 3/14 01.02.96

HL EH PD 21

GaAs MMIC CGY 181

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DC-ID(VG) characteristics - typical values of stage 1, VD=3V

1,2

High current
Medium current
Low current

1

0,8

0,6

0,4

0,2

ID [A]

0,8

0,7

0,6

0,5

0,4

ID [A]

0,3

0,2

-5 -4,5 -4 -3,5 -3 -2,5 -2 -1,5 -1 -0,5 0

VG [V]

DC-Output characteristics - typical values of stage 1

VG=-0.25 V

-0.50 V

-0.75 V

-1.00 V

-1.25 V

-1.50 V

Ptot=1.25 W

0

-1.75 V

-2.00 V

0,1

-2.25 V

0

0 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5 5,5 6

VD [V]

Pin 2 ( VTR ) has to be open during measuring DC-characteristics!

Siemens Aktiengesellschaft pg. 4/14 01.02.96

HL EH PD 21

GaAs MMIC CGY 181

________________________________________________________________________________________________________

DC-ID(VG) characteristics - typical values of stage 2, VD=3V

4,5

High current
Medium current
Low current

-5 -4,5 -4 -3,5 -3 -2,5 -2 -1,5 -1 -0,5 0

VG [V]

DC-Output characteristics - typical values of stage 2

4

3,5

ID [A]

3

2,5

2

1,5

1

0,5

0

3

2,5

VG=-0.50 V

-0.75 V

1,5

ID [A]

2

-1.00 V

-1.25 V

-1.50 V

1

0,5

0

00,511,522,533,544,555,56

VD [V]

-1.75 V

Pin 2 ( VTR ) has to be open during measuring DC-characteristics!

Ptot=3.75 W

-2.00 V

-2.25 V

-2.50 V

Siemens Aktiengesellschaft pg. 5/14 01.02.96

HL EH PD 21